Cleaning The Sight Glass In The Boiler Door; Checking The Mixer For Ease Of Operation And Tightness; Checking The Vitoair Draught Stabiliser (If Installed); Adjusting The Burner - Viessmann VITOPLEX 100 Service Instructions Manual

Further details regarding the individual steps

Cleaning the sight glass in the boiler door

Check the gaskets and hose connection
for leaks.

Checking the mixer for ease of operation and tightness

1. Remove the motorised lever from the
mixer handle.
2. Check the mixer for ease of opera-
tion.

Checking the Vitoair draught stabiliser (if installed)

Release the latch on the control disc.

Adjusting the burner

Burner service instructions or
separate documentation from the
burner manufacturer.
Adjust the maximum oil or gas through-
put of the burner to the rated boiler heat-
ing output.
Commissioning, inspection, maintenance
(cont.)
3. Check the mixer for leaks. Replace
the O-ring gaskets if the mixer is leak-
ing.
4. Snap the motorised lever into place.
The control disc must swing freely during
burner operation.
Rated Pressure drop on the
heating hot gas side
output
kW Pa
150
200
250
310
400
mbar
60 0.6
120 1.2
130 1.3
230 2.3
250 2.5
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